Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-nextgrafted

Pull networking updates from Jakub Kicinski:
 "Core:

   - Add dedicated kmem_cache for typical/small skb->head, avoid having
     to access struct page at kfree time, and improve memory use.

   - Introduce sysctl to set default RPS configuration for new netdevs.

   - Define Netlink protocol specification format which can be used to
     describe messages used by each family and auto-generate parsers.
     Add tools for generating kernel data structures and uAPI headers.

   - Expose all net/core sysctls inside netns.

   - Remove 4s sleep in netpoll if carrier is instantly detected on
     boot.

   - Add configurable limit of MDB entries per port, and port-vlan.

   - Continue populating drop reasons throughout the stack.

   - Retire a handful of legacy Qdiscs and classifiers.

  Protocols:

   - Support IPv4 big TCP (TSO frames larger than 64kB).

   - Add IP_LOCAL_PORT_RANGE socket option, to control local port range
     on socket by socket basis.

   - Track and report in procfs number of MPTCP sockets used.

   - Support mixing IPv4 and IPv6 flows in the in-kernel MPTCP path
     manager.

   - IPv6: don't check net.ipv6.route.max_size and rely on garbage
     collection to free memory (similarly to IPv4).

   - Support Penultimate Segment Pop (PSP) flavor in SRv6 (RFC8986).

   - ICMP: add per-rate limit counters.

   - Add support for user scanning requests in ieee802154.

   - Remove static WEP support.

   - Support minimal Wi-Fi 7 Extremely High Throughput (EHT) rate
     reporting.

   - WiFi 7 EHT channel puncturing support (client & AP).

  BPF:

   - Add a rbtree data structure following the "next-gen data structure"
     precedent set by recently added linked list, that is, by using
     kfunc + kptr instead of adding a new BPF map type.

   - Expose XDP hints via kfuncs with initial support for RX hash and
     timestamp metadata.

   - Add BPF_F_NO_TUNNEL_KEY extension to bpf_skb_set_tunnel_key to
     better support decap on GRE tunnel devices not operating in collect
     metadata.

   - Improve x86 JIT's codegen for PROBE_MEM runtime error checks.

   - Remove the need for trace_printk_lock for bpf_trace_printk and
     bpf_trace_vprintk helpers.

   - Extend libbpf's bpf_tracing.h support for tracing arguments of
     kprobes/uprobes and syscall as a special case.

   - Significantly reduce the search time for module symbols by
     livepatch and BPF.

   - Enable cpumasks to be used as kptrs, which is useful for tracing
     programs tracking which tasks end up running on which CPUs in
     different time intervals.

   - Add support for BPF trampoline on s390x and riscv64.

   - Add capability to export the XDP features supported by the NIC.

   - Add __bpf_kfunc tag for marking kernel functions as kfuncs.

   - Add cgroup.memory=nobpf kernel parameter option to disable BPF
     memory accounting for container environments.

  Netfilter:

   - Remove the CLUSTERIP target. It has been marked as obsolete for
     years, and we still have WARN splats wrt races of the out-of-band
     /proc interface installed by this target.

   - Add 'destroy' commands to nf_tables. They are identical to the
     existing 'delete' commands, but do not return an error if the
     referenced object (set, chain, rule...) did not exist.

  Driver API:

   - Improve cpumask_local_spread() locality to help NICs set the right
     IRQ affinity on AMD platforms.

   - Separate C22 and C45 MDIO bus transactions more clearly.

   - Introduce new DCB table to control DSCP rewrite on egress.

   - Support configuration of Physical Layer Collision Avoidance (PLCA)
     Reconciliation Sublayer (RS) (802.3cg-2019). Modern version of
     shared medium Ethernet.

   - Support for MAC Merge layer (IEEE 802.3-2018 clause 99). Allowing
     preemption of low priority frames by high priority frames.

   - Add support for controlling MACSec offload using netlink SET.

   - Rework devlink instance refcounts to allow registration and
     de-registration under the instance lock. Split the code into
     multiple files, drop some of the unnecessarily granular locks and
     factor out common parts of netlink operation handling.

   - Add TX frame aggregation parameters (for USB drivers).

   - Add a new attr TCA_EXT_WARN_MSG to report TC (offload) warning
     messages with notifications for debug.

   - Allow offloading of UDP NEW connections via act_ct.

   - Add support for per action HW stats in TC.

   - Support hardware miss to TC action (continue processing in SW from
     a specific point in the action chain).

   - Warn if old Wireless Extension user space interface is used with
     modern cfg80211/mac80211 drivers. Do not support Wireless
     Extensions for Wi-Fi 7 devices at all. Everyone should switch to
     using nl80211 interface instead.

   - Improve the CAN bit timing configuration. Use extack to return
     error messages directly to user space, update the SJW handling,
     including the definition of a new default value that will benefit
     CAN-FD controllers, by increasing their oscillator tolerance.

  New hardware / drivers:

   - Ethernet:
      - nVidia BlueField-3 support (control traffic driver)
      - Ethernet support for imx93 SoCs
      - Motorcomm yt8531 gigabit Ethernet PHY
      - onsemi NCN26000 10BASE-T1S PHY (with support for PLCA)
      - Microchip LAN8841 PHY (incl. cable diagnostics and PTP)
      - Amlogic gxl MDIO mux

   - WiFi:
      - RealTek RTL8188EU (rtl8xxxu)
      - Qualcomm Wi-Fi 7 devices (ath12k)

   - CAN:
      - Renesas R-Car V4H

  Drivers:

   - Bluetooth:
      - Set Per Platform Antenna Gain (PPAG) for Intel controllers.

   - Ethernet NICs:
      - Intel (1G, igc):
         - support TSN / Qbv / packet scheduling features of i226 model
      - Intel (100G, ice):
         - use GNSS subsystem instead of TTY
         - multi-buffer XDP support
         - extend support for GPIO pins to E823 devices
      - nVidia/Mellanox:
         - update the shared buffer configuration on PFC commands
         - implement PTP adjphase function for HW offset control
         - TC support for Geneve and GRE with VF tunnel offload
         - more efficient crypto key management method
         - multi-port eswitch support
      - Netronome/Corigine:
         - add DCB IEEE support
         - support IPsec offloading for NFP3800
      - Freescale/NXP (enetc):
         - support XDP_REDIRECT for XDP non-linear buffers
         - improve reconfig, avoid link flap and waiting for idle
         - support MAC Merge layer
      - Other NICs:
         - sfc/ef100: add basic devlink support for ef100
         - ionic: rx_push mode operation (writing descriptors via MMIO)
         - bnxt: use the auxiliary bus abstraction for RDMA
         - r8169: disable ASPM and reset bus in case of tx timeout
         - cpsw: support QSGMII mode for J721e CPSW9G
         - cpts: support pulse-per-second output
         - ngbe: add an mdio bus driver
         - usbnet: optimize usbnet_bh() by avoiding unnecessary queuing
         - r8152: handle devices with FW with NCM support
         - amd-xgbe: support 10Mbps, 2.5GbE speeds and rx-adaptation
         - virtio-net: support multi buffer XDP
         - virtio/vsock: replace virtio_vsock_pkt with sk_buff
         - tsnep: XDP support

   - Ethernet high-speed switches:
      - nVidia/Mellanox (mlxsw):
         - add support for latency TLV (in FW control messages)
      - Microchip (sparx5):
         - separate explicit and implicit traffic forwarding rules, make
           the implicit rules always active
         - add support for egress DSCP rewrite
         - IS0 VCAP support (Ingress Classification)
         - IS2 VCAP filters (protos, L3 addrs, L4 ports, flags, ToS
           etc.)
         - ES2 VCAP support (Egress Access Control)
         - support for Per-Stream Filtering and Policing (802.1Q,
           8.6.5.1)

   - Ethernet embedded switches:
      - Marvell (mv88e6xxx):
         - add MAB (port auth) offload support
         - enable PTP receive for mv88e6390
      - NXP (ocelot):
         - support MAC Merge layer
         - support for the the vsc7512 internal copper phys
      - Microchip:
         - lan9303: convert to PHYLINK
         - lan966x: support TC flower filter statistics
         - lan937x: PTP support for KSZ9563/KSZ8563 and LAN937x
         - lan937x: support Credit Based Shaper configuration
         - ksz9477: support Energy Efficient Ethernet
      - other:
         - qca8k: convert to regmap read/write API, use bulk operations
         - rswitch: Improve TX timestamp accuracy

   - Intel WiFi (iwlwifi):
      - EHT (Wi-Fi 7) rate reporting
      - STEP equalizer support: transfer some STEP (connection to radio
        on platforms with integrated wifi) related parameters from the
        BIOS to the firmware.

   - Qualcomm 802.11ax WiFi (ath11k):
      - IPQ5018 support
      - Fine Timing Measurement (FTM) responder role support
      - channel 177 support

   - MediaTek WiFi (mt76):
      - per-PHY LED support
      - mt7996: EHT (Wi-Fi 7) support
      - Wireless Ethernet Dispatch (WED) reset support
      - switch to using page pool allocator

   - RealTek WiFi (rtw89):
      - support new version of Bluetooth co-existance

   - Mobile:
      - rmnet: support TX aggregation"

* tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1872 commits)
  page_pool: add a comment explaining the fragment counter usage
  net: ethtool: fix __ethtool_dev_mm_supported() implementation
  ethtool: pse-pd: Fix double word in comments
  xsk: add linux/vmalloc.h to xsk.c
  sefltests: netdevsim: wait for devlink instance after netns removal
  selftest: fib_tests: Always cleanup before exit
  net/mlx5e: Align IPsec ASO result memory to be as required by hardware
  net/mlx5e: TC, Set CT miss to the specific ct action instance
  net/mlx5e: Rename CHAIN_TO_REG to MAPPED_OBJ_TO_REG
  net/mlx5: Refactor tc miss handling to a single function
  net/mlx5: Kconfig: Make tc offload depend on tc skb extension
  net/sched: flower: Support hardware miss to tc action
  net/sched: flower: Move filter handle initialization earlier
  net/sched: cls_api: Support hardware miss to tc action
  net/sched: Rename user cookie and act cookie
  sfc: fix builds without CONFIG_RTC_LIB
  sfc: clean up some inconsistent indentings
  net/mlx4_en: Introduce flexible array to silence overflow warning
  net: lan966x: Fix possible deadlock inside PTP
  net/ulp: Remove redundant ->clone() test in inet_clone_ulp().
  ...

1 files changed, 759 insertions, 0 deletions

diff --git a/drivers/atm/nicstar.h b/drivers/atm/nicstar.h
new file mode 100644
index 000000000..1b7f1dfc1
--- /dev/null
+++ b/drivers/atm/nicstar.h
@@ -0,0 +1,759 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * nicstar.h
+ *
+ * Header file for the nicstar device driver.
+ *
+ * Author: Rui Prior (rprior@inescn.pt)
+ * PowerPC support by Jay Talbott (jay_talbott@mcg.mot.com) April 1999
+ *
+ * (C) INESC 1998
+ */
+
+#ifndef _LINUX_NICSTAR_H_
+#define _LINUX_NICSTAR_H_
+
+/* Includes */
+
+#include <linux/types.h>
+#include <linux/pci.h>
+#include <linux/idr.h>
+#include <linux/uio.h>
+#include <linux/skbuff.h>
+#include <linux/atmdev.h>
+#include <linux/atm_nicstar.h>
+
+/* Options */
+
+#define NS_MAX_CARDS 4		/* Maximum number of NICStAR based cards
+				   controlled by the device driver. Must
+				   be <= 5 */
+
+#undef RCQ_SUPPORT		/* Do not define this for now */
+
+#define NS_TST_NUM_ENTRIES 2340	/* + 1 for return */
+#define NS_TST_RESERVED 340	/* N. entries reserved for UBR/ABR/VBR */
+
+#define NS_SMBUFSIZE 48		/* 48, 96, 240 or 2048 */
+#define NS_LGBUFSIZE 16384	/* 2048, 4096, 8192 or 16384 */
+#define NS_RSQSIZE 8192		/* 2048, 4096 or 8192 */
+#define NS_VPIBITS 2		/* 0, 1, 2, or 8 */
+
+#define NS_MAX_RCTSIZE 4096	/* Number of entries. 4096 or 16384.
+				   Define 4096 only if (all) your card(s)
+				   have 32K x 32bit SRAM, in which case
+				   setting this to 16384 will just waste a
+				   lot of memory.
+				   Setting this to 4096 for a card with
+				   128K x 32bit SRAM will limit the maximum
+				   VCI. */
+
+				/*#define NS_PCI_LATENCY 64*//* Must be a multiple of 32 */
+
+	/* Number of buffers initially allocated */
+#define NUM_SB 32		/* Must be even */
+#define NUM_LB 24		/* Must be even */
+#define NUM_HB 8		/* Pre-allocated huge buffers */
+#define NUM_IOVB 48		/* Iovec buffers */
+
+	/* Lower level for count of buffers */
+#define MIN_SB 8		/* Must be even */
+#define MIN_LB 8		/* Must be even */
+#define MIN_HB 6
+#define MIN_IOVB 8
+
+	/* Upper level for count of buffers */
+#define MAX_SB 64		/* Must be even, <= 508 */
+#define MAX_LB 48		/* Must be even, <= 508 */
+#define MAX_HB 10
+#define MAX_IOVB 80
+
+	/* These are the absolute maximum allowed for the ioctl() */
+#define TOP_SB 256		/* Must be even, <= 508 */
+#define TOP_LB 128		/* Must be even, <= 508 */
+#define TOP_HB 64
+#define TOP_IOVB 256
+
+#define MAX_TBD_PER_VC 1	/* Number of TBDs before a TSR */
+#define MAX_TBD_PER_SCQ 10	/* Only meaningful for variable rate SCQs */
+
+#undef ENABLE_TSQFIE
+
+#define SCQFULL_TIMEOUT (5 * HZ)
+
+#define NS_POLL_PERIOD (HZ)
+
+#define PCR_TOLERANCE (1.0001)
+
+/* ESI stuff */
+
+#define NICSTAR_EPROM_MAC_ADDR_OFFSET 0x6C
+#define NICSTAR_EPROM_MAC_ADDR_OFFSET_ALT 0xF6
+
+/* #defines */
+
+#define NS_IOREMAP_SIZE 4096
+
+/*
+ * BUF_XX distinguish the Rx buffers depending on their (small/large) size.
+ * BUG_SM and BUG_LG are both used by the driver and the device.
+ * BUF_NONE is only used by the driver.
+ */
+#define BUF_SM		0x00000000	/* These two are used for push_rxbufs() */
+#define BUF_LG		0x00000001	/* CMD, Write_FreeBufQ, LBUF bit */
+#define BUF_NONE 	0xffffffff	/* Software only: */
+
+#define NS_HBUFSIZE 65568	/* Size of max. AAL5 PDU */
+#define NS_MAX_IOVECS (2 + (65568 - NS_SMBUFSIZE) / \
+                       (NS_LGBUFSIZE - (NS_LGBUFSIZE % 48)))
+#define NS_IOVBUFSIZE (NS_MAX_IOVECS * (sizeof(struct iovec)))
+
+#define NS_SMBUFSIZE_USABLE (NS_SMBUFSIZE - NS_SMBUFSIZE % 48)
+#define NS_LGBUFSIZE_USABLE (NS_LGBUFSIZE - NS_LGBUFSIZE % 48)
+
+#define NS_AAL0_HEADER (ATM_AAL0_SDU - ATM_CELL_PAYLOAD)	/* 4 bytes */
+
+#define NS_SMSKBSIZE (NS_SMBUFSIZE + NS_AAL0_HEADER)
+#define NS_LGSKBSIZE (NS_SMBUFSIZE + NS_LGBUFSIZE)
+
+/* NICStAR structures located in host memory */
+
+/*
+ * RSQ - Receive Status Queue
+ *
+ * Written by the NICStAR, read by the device driver.
+ */
+
+typedef struct ns_rsqe {
+	u32 word_1;
+	u32 buffer_handle;
+	u32 final_aal5_crc32;
+	u32 word_4;
+} ns_rsqe;
+
+#define ns_rsqe_vpi(ns_rsqep) \
+        ((le32_to_cpu((ns_rsqep)->word_1) & 0x00FF0000) >> 16)
+#define ns_rsqe_vci(ns_rsqep) \
+        (le32_to_cpu((ns_rsqep)->word_1) & 0x0000FFFF)
+
+#define NS_RSQE_VALID      0x80000000
+#define NS_RSQE_NZGFC      0x00004000
+#define NS_RSQE_EOPDU      0x00002000
+#define NS_RSQE_BUFSIZE    0x00001000
+#define NS_RSQE_CONGESTION 0x00000800
+#define NS_RSQE_CLP        0x00000400
+#define NS_RSQE_CRCERR     0x00000200
+
+#define NS_RSQE_BUFSIZE_SM 0x00000000
+#define NS_RSQE_BUFSIZE_LG 0x00001000
+
+#define ns_rsqe_valid(ns_rsqep) \
+        (le32_to_cpu((ns_rsqep)->word_4) & NS_RSQE_VALID)
+#define ns_rsqe_nzgfc(ns_rsqep) \
+        (le32_to_cpu((ns_rsqep)->word_4) & NS_RSQE_NZGFC)
+#define ns_rsqe_eopdu(ns_rsqep) \
+        (le32_to_cpu((ns_rsqep)->word_4) & NS_RSQE_EOPDU)
+#define ns_rsqe_bufsize(ns_rsqep) \
+        (le32_to_cpu((ns_rsqep)->word_4) & NS_RSQE_BUFSIZE)
+#define ns_rsqe_congestion(ns_rsqep) \
+        (le32_to_cpu((ns_rsqep)->word_4) & NS_RSQE_CONGESTION)
+#define ns_rsqe_clp(ns_rsqep) \
+        (le32_to_cpu((ns_rsqep)->word_4) & NS_RSQE_CLP)
+#define ns_rsqe_crcerr(ns_rsqep) \
+        (le32_to_cpu((ns_rsqep)->word_4) & NS_RSQE_CRCERR)
+
+#define ns_rsqe_cellcount(ns_rsqep) \
+        (le32_to_cpu((ns_rsqep)->word_4) & 0x000001FF)
+#define ns_rsqe_init(ns_rsqep) \
+        ((ns_rsqep)->word_4 = cpu_to_le32(0x00000000))
+
+#define NS_RSQ_NUM_ENTRIES (NS_RSQSIZE / 16)
+#define NS_RSQ_ALIGNMENT NS_RSQSIZE
+
+/*
+ * RCQ - Raw Cell Queue
+ *
+ * Written by the NICStAR, read by the device driver.
+ */
+
+typedef struct cell_payload {
+	u32 word[12];
+} cell_payload;
+
+typedef struct ns_rcqe {
+	u32 word_1;
+	u32 word_2;
+	u32 word_3;
+	u32 word_4;
+	cell_payload payload;
+} ns_rcqe;
+
+#define NS_RCQE_SIZE 64		/* bytes */
+
+#define ns_rcqe_islast(ns_rcqep) \
+        (le32_to_cpu((ns_rcqep)->word_2) != 0x00000000)
+#define ns_rcqe_cellheader(ns_rcqep) \
+        (le32_to_cpu((ns_rcqep)->word_1))
+#define ns_rcqe_nextbufhandle(ns_rcqep) \
+        (le32_to_cpu((ns_rcqep)->word_2))
+
+/*
+ * SCQ - Segmentation Channel Queue
+ *
+ * Written by the device driver, read by the NICStAR.
+ */
+
+typedef struct ns_scqe {
+	u32 word_1;
+	u32 word_2;
+	u32 word_3;
+	u32 word_4;
+} ns_scqe;
+
+   /* NOTE: SCQ entries can be either a TBD (Transmit Buffer Descriptors)
+      or TSR (Transmit Status Requests) */
+
+#define NS_SCQE_TYPE_TBD 0x00000000
+#define NS_SCQE_TYPE_TSR 0x80000000
+
+#define NS_TBD_EOPDU 0x40000000
+#define NS_TBD_AAL0  0x00000000
+#define NS_TBD_AAL34 0x04000000
+#define NS_TBD_AAL5  0x08000000
+
+#define NS_TBD_VPI_MASK 0x0FF00000
+#define NS_TBD_VCI_MASK 0x000FFFF0
+#define NS_TBD_VC_MASK (NS_TBD_VPI_MASK | NS_TBD_VCI_MASK)
+
+#define NS_TBD_VPI_SHIFT 20
+#define NS_TBD_VCI_SHIFT 4
+
+#define ns_tbd_mkword_1(flags, m, n, buflen) \
+      (cpu_to_le32((flags) | (m) << 23 | (n) << 16 | (buflen)))
+#define ns_tbd_mkword_1_novbr(flags, buflen) \
+      (cpu_to_le32((flags) | (buflen) | 0x00810000))
+#define ns_tbd_mkword_3(control, pdulen) \
+      (cpu_to_le32((control) << 16 | (pdulen)))
+#define ns_tbd_mkword_4(gfc, vpi, vci, pt, clp) \
+      (cpu_to_le32((gfc) << 28 | (vpi) << 20 | (vci) << 4 | (pt) << 1 | (clp)))
+
+#define NS_TSR_INTENABLE 0x20000000
+
+#define NS_TSR_SCDISVBR 0xFFFF	/* Use as scdi for VBR SCD */
+
+#define ns_tsr_mkword_1(flags) \
+        (cpu_to_le32(NS_SCQE_TYPE_TSR | (flags)))
+#define ns_tsr_mkword_2(scdi, scqi) \
+        (cpu_to_le32((scdi) << 16 | 0x00008000 | (scqi)))
+
+#define ns_scqe_is_tsr(ns_scqep) \
+        (le32_to_cpu((ns_scqep)->word_1) & NS_SCQE_TYPE_TSR)
+
+#define VBR_SCQ_NUM_ENTRIES 512
+#define VBR_SCQSIZE 8192
+#define CBR_SCQ_NUM_ENTRIES 64
+#define CBR_SCQSIZE 1024
+
+#define NS_SCQE_SIZE 16
+
+/*
+ * TSQ - Transmit Status Queue
+ *
+ * Written by the NICStAR, read by the device driver.
+ */
+
+typedef struct ns_tsi {
+	u32 word_1;
+	u32 word_2;
+} ns_tsi;
+
+   /* NOTE: The first word can be a status word copied from the TSR which
+      originated the TSI, or a timer overflow indicator. In this last
+      case, the value of the first word is all zeroes. */
+
+#define NS_TSI_EMPTY          0x80000000
+#define NS_TSI_TIMESTAMP_MASK 0x00FFFFFF
+
+#define ns_tsi_isempty(ns_tsip) \
+        (le32_to_cpu((ns_tsip)->word_2) & NS_TSI_EMPTY)
+#define ns_tsi_gettimestamp(ns_tsip) \
+        (le32_to_cpu((ns_tsip)->word_2) & NS_TSI_TIMESTAMP_MASK)
+
+#define ns_tsi_init(ns_tsip) \
+        ((ns_tsip)->word_2 = cpu_to_le32(NS_TSI_EMPTY))
+
+#define NS_TSQSIZE 8192
+#define NS_TSQ_NUM_ENTRIES 1024
+#define NS_TSQ_ALIGNMENT 8192
+
+#define NS_TSI_SCDISVBR NS_TSR_SCDISVBR
+
+#define ns_tsi_tmrof(ns_tsip) \
+        (le32_to_cpu((ns_tsip)->word_1) == 0x00000000)
+#define ns_tsi_getscdindex(ns_tsip) \
+        ((le32_to_cpu((ns_tsip)->word_1) & 0xFFFF0000) >> 16)
+#define ns_tsi_getscqpos(ns_tsip) \
+        (le32_to_cpu((ns_tsip)->word_1) & 0x00007FFF)
+
+/* NICStAR structures located in local SRAM */
+
+/*
+ * RCT - Receive Connection Table
+ *
+ * Written by both the NICStAR and the device driver.
+ */
+
+typedef struct ns_rcte {
+	u32 word_1;
+	u32 buffer_handle;
+	u32 dma_address;
+	u32 aal5_crc32;
+} ns_rcte;
+
+#define NS_RCTE_BSFB            0x00200000	/* Rev. D only */
+#define NS_RCTE_NZGFC           0x00100000
+#define NS_RCTE_CONNECTOPEN     0x00080000
+#define NS_RCTE_AALMASK         0x00070000
+#define NS_RCTE_AAL0            0x00000000
+#define NS_RCTE_AAL34           0x00010000
+#define NS_RCTE_AAL5            0x00020000
+#define NS_RCTE_RCQ             0x00030000
+#define NS_RCTE_RAWCELLINTEN    0x00008000
+#define NS_RCTE_RXCONSTCELLADDR 0x00004000
+#define NS_RCTE_BUFFVALID       0x00002000
+#define NS_RCTE_FBDSIZE         0x00001000
+#define NS_RCTE_EFCI            0x00000800
+#define NS_RCTE_CLP             0x00000400
+#define NS_RCTE_CRCERROR        0x00000200
+#define NS_RCTE_CELLCOUNT_MASK  0x000001FF
+
+#define NS_RCTE_FBDSIZE_SM 0x00000000
+#define NS_RCTE_FBDSIZE_LG 0x00001000
+
+#define NS_RCT_ENTRY_SIZE 4	/* Number of dwords */
+
+   /* NOTE: We could make macros to contruct the first word of the RCTE,
+      but that doesn't seem to make much sense... */
+
+/*
+ * FBD - Free Buffer Descriptor
+ *
+ * Written by the device driver using via the command register.
+ */
+
+typedef struct ns_fbd {
+	u32 buffer_handle;
+	u32 dma_address;
+} ns_fbd;
+
+/*
+ * TST - Transmit Schedule Table
+ *
+ * Written by the device driver.
+ */
+
+typedef u32 ns_tste;
+
+#define NS_TST_OPCODE_MASK 0x60000000
+
+#define NS_TST_OPCODE_NULL     0x00000000	/* Insert null cell */
+#define NS_TST_OPCODE_FIXED    0x20000000	/* Cell from a fixed rate channel */
+#define NS_TST_OPCODE_VARIABLE 0x40000000
+#define NS_TST_OPCODE_END      0x60000000	/* Jump */
+
+#define ns_tste_make(opcode, sramad) (opcode | sramad)
+
+   /* NOTE:
+
+      - When the opcode is FIXED, sramad specifies the SRAM address of the
+      SCD for that fixed rate channel.
+      - When the opcode is END, sramad specifies the SRAM address of the
+      location of the next TST entry to read.
+    */
+
+/*
+ * SCD - Segmentation Channel Descriptor
+ *
+ * Written by both the device driver and the NICStAR
+ */
+
+typedef struct ns_scd {
+	u32 word_1;
+	u32 word_2;
+	u32 partial_aal5_crc;
+	u32 reserved;
+	ns_scqe cache_a;
+	ns_scqe cache_b;
+} ns_scd;
+
+#define NS_SCD_BASE_MASK_VAR 0xFFFFE000	/* Variable rate */
+#define NS_SCD_BASE_MASK_FIX 0xFFFFFC00	/* Fixed rate */
+#define NS_SCD_TAIL_MASK_VAR 0x00001FF0
+#define NS_SCD_TAIL_MASK_FIX 0x000003F0
+#define NS_SCD_HEAD_MASK_VAR 0x00001FF0
+#define NS_SCD_HEAD_MASK_FIX 0x000003F0
+#define NS_SCD_XMITFOREVER   0x02000000
+
+   /* NOTE: There are other fields in word 2 of the SCD, but as they should
+      not be needed in the device driver they are not defined here. */
+
+/* NICStAR local SRAM memory map */
+
+#define NS_RCT           0x00000
+#define NS_RCT_32_END    0x03FFF
+#define NS_RCT_128_END   0x0FFFF
+#define NS_UNUSED_32     0x04000
+#define NS_UNUSED_128    0x10000
+#define NS_UNUSED_END    0x1BFFF
+#define NS_TST_FRSCD     0x1C000
+#define NS_TST_FRSCD_END 0x1E7DB
+#define NS_VRSCD2        0x1E7DC
+#define NS_VRSCD2_END    0x1E7E7
+#define NS_VRSCD1        0x1E7E8
+#define NS_VRSCD1_END    0x1E7F3
+#define NS_VRSCD0        0x1E7F4
+#define NS_VRSCD0_END    0x1E7FF
+#define NS_RXFIFO        0x1E800
+#define NS_RXFIFO_END    0x1F7FF
+#define NS_SMFBQ         0x1F800
+#define NS_SMFBQ_END     0x1FBFF
+#define NS_LGFBQ         0x1FC00
+#define NS_LGFBQ_END     0x1FFFF
+
+/* NISCtAR operation registers */
+
+/* See Section 3.4 of `IDT77211 NICStAR User Manual' from www.idt.com */
+
+enum ns_regs {
+	DR0 = 0x00,		/* Data Register 0 R/W */
+	DR1 = 0x04,		/* Data Register 1 W */
+	DR2 = 0x08,		/* Data Register 2 W */
+	DR3 = 0x0C,		/* Data Register 3 W */
+	CMD = 0x10,		/* Command W */
+	CFG = 0x14,		/* Configuration R/W */
+	STAT = 0x18,		/* Status R/W */
+	RSQB = 0x1C,		/* Receive Status Queue Base W */
+	RSQT = 0x20,		/* Receive Status Queue Tail R */
+	RSQH = 0x24,		/* Receive Status Queue Head W */
+	CDC = 0x28,		/* Cell Drop Counter R/clear */
+	VPEC = 0x2C,		/* VPI/VCI Lookup Error Count R/clear */
+	ICC = 0x30,		/* Invalid Cell Count R/clear */
+	RAWCT = 0x34,		/* Raw Cell Tail R */
+	TMR = 0x38,		/* Timer R */
+	TSTB = 0x3C,		/* Transmit Schedule Table Base R/W */
+	TSQB = 0x40,		/* Transmit Status Queue Base W */
+	TSQT = 0x44,		/* Transmit Status Queue Tail R */
+	TSQH = 0x48,		/* Transmit Status Queue Head W */
+	GP = 0x4C,		/* General Purpose R/W */
+	VPM = 0x50		/* VPI/VCI Mask W */
+};
+
+/* NICStAR commands issued to the CMD register */
+
+/* Top 4 bits are command opcode, lower 28 are parameters. */
+
+#define NS_CMD_NO_OPERATION         0x00000000
+	/* params always 0 */
+
+#define NS_CMD_OPENCLOSE_CONNECTION 0x20000000
+	/* b19{1=open,0=close} b18-2{SRAM addr} */
+
+#define NS_CMD_WRITE_SRAM           0x40000000
+	/* b18-2{SRAM addr} b1-0{burst size} */
+
+#define NS_CMD_READ_SRAM            0x50000000
+	/* b18-2{SRAM addr} */
+
+#define NS_CMD_WRITE_FREEBUFQ       0x60000000
+	/* b0{large buf indicator} */
+
+#define NS_CMD_READ_UTILITY         0x80000000
+	/* b8{1=select UTL_CS1} b9{1=select UTL_CS0} b7-0{bus addr} */
+
+#define NS_CMD_WRITE_UTILITY        0x90000000
+	/* b8{1=select UTL_CS1} b9{1=select UTL_CS0} b7-0{bus addr} */
+
+#define NS_CMD_OPEN_CONNECTION (NS_CMD_OPENCLOSE_CONNECTION | 0x00080000)
+#define NS_CMD_CLOSE_CONNECTION NS_CMD_OPENCLOSE_CONNECTION
+
+/* NICStAR configuration bits */
+
+#define NS_CFG_SWRST          0x80000000	/* Software Reset */
+#define NS_CFG_RXPATH         0x20000000	/* Receive Path Enable */
+#define NS_CFG_SMBUFSIZE_MASK 0x18000000	/* Small Receive Buffer Size */
+#define NS_CFG_LGBUFSIZE_MASK 0x06000000	/* Large Receive Buffer Size */
+#define NS_CFG_EFBIE          0x01000000	/* Empty Free Buffer Queue
+						   Interrupt Enable */
+#define NS_CFG_RSQSIZE_MASK   0x00C00000	/* Receive Status Queue Size */
+#define NS_CFG_ICACCEPT       0x00200000	/* Invalid Cell Accept */
+#define NS_CFG_IGNOREGFC      0x00100000	/* Ignore General Flow Control */
+#define NS_CFG_VPIBITS_MASK   0x000C0000	/* VPI/VCI Bits Size Select */
+#define NS_CFG_RCTSIZE_MASK   0x00030000	/* Receive Connection Table Size */
+#define NS_CFG_VCERRACCEPT    0x00008000	/* VPI/VCI Error Cell Accept */
+#define NS_CFG_RXINT_MASK     0x00007000	/* End of Receive PDU Interrupt
+						   Handling */
+#define NS_CFG_RAWIE          0x00000800	/* Raw Cell Qu' Interrupt Enable */
+#define NS_CFG_RSQAFIE        0x00000400	/* Receive Queue Almost Full
+						   Interrupt Enable */
+#define NS_CFG_RXRM           0x00000200	/* Receive RM Cells */
+#define NS_CFG_TMRROIE        0x00000080	/* Timer Roll Over Interrupt
+						   Enable */
+#define NS_CFG_TXEN           0x00000020	/* Transmit Operation Enable */
+#define NS_CFG_TXIE           0x00000010	/* Transmit Status Interrupt
+						   Enable */
+#define NS_CFG_TXURIE         0x00000008	/* Transmit Under-run Interrupt
+						   Enable */
+#define NS_CFG_UMODE          0x00000004	/* Utopia Mode (cell/byte) Select */
+#define NS_CFG_TSQFIE         0x00000002	/* Transmit Status Queue Full
+						   Interrupt Enable */
+#define NS_CFG_PHYIE          0x00000001	/* PHY Interrupt Enable */
+
+#define NS_CFG_SMBUFSIZE_48    0x00000000
+#define NS_CFG_SMBUFSIZE_96    0x08000000
+#define NS_CFG_SMBUFSIZE_240   0x10000000
+#define NS_CFG_SMBUFSIZE_2048  0x18000000
+
+#define NS_CFG_LGBUFSIZE_2048  0x00000000
+#define NS_CFG_LGBUFSIZE_4096  0x02000000
+#define NS_CFG_LGBUFSIZE_8192  0x04000000
+#define NS_CFG_LGBUFSIZE_16384 0x06000000
+
+#define NS_CFG_RSQSIZE_2048 0x00000000
+#define NS_CFG_RSQSIZE_4096 0x00400000
+#define NS_CFG_RSQSIZE_8192 0x00800000
+
+#define NS_CFG_VPIBITS_0 0x00000000
+#define NS_CFG_VPIBITS_1 0x00040000
+#define NS_CFG_VPIBITS_2 0x00080000
+#define NS_CFG_VPIBITS_8 0x000C0000
+
+#define NS_CFG_RCTSIZE_4096_ENTRIES  0x00000000
+#define NS_CFG_RCTSIZE_8192_ENTRIES  0x00010000
+#define NS_CFG_RCTSIZE_16384_ENTRIES 0x00020000
+
+#define NS_CFG_RXINT_NOINT   0x00000000
+#define NS_CFG_RXINT_NODELAY 0x00001000
+#define NS_CFG_RXINT_314US   0x00002000
+#define NS_CFG_RXINT_624US   0x00003000
+#define NS_CFG_RXINT_899US   0x00004000
+
+/* NICStAR STATus bits */
+
+#define NS_STAT_SFBQC_MASK 0xFF000000	/* hi 8 bits Small Buffer Queue Count */
+#define NS_STAT_LFBQC_MASK 0x00FF0000	/* hi 8 bits Large Buffer Queue Count */
+#define NS_STAT_TSIF       0x00008000	/* Transmit Status Queue Indicator */
+#define NS_STAT_TXICP      0x00004000	/* Transmit Incomplete PDU */
+#define NS_STAT_TSQF       0x00001000	/* Transmit Status Queue Full */
+#define NS_STAT_TMROF      0x00000800	/* Timer Overflow */
+#define NS_STAT_PHYI       0x00000400	/* PHY Device Interrupt */
+#define NS_STAT_CMDBZ      0x00000200	/* Command Busy */
+#define NS_STAT_SFBQF      0x00000100	/* Small Buffer Queue Full */
+#define NS_STAT_LFBQF      0x00000080	/* Large Buffer Queue Full */
+#define NS_STAT_RSQF       0x00000040	/* Receive Status Queue Full */
+#define NS_STAT_EOPDU      0x00000020	/* End of PDU */
+#define NS_STAT_RAWCF      0x00000010	/* Raw Cell Flag */
+#define NS_STAT_SFBQE      0x00000008	/* Small Buffer Queue Empty */
+#define NS_STAT_LFBQE      0x00000004	/* Large Buffer Queue Empty */
+#define NS_STAT_RSQAF      0x00000002	/* Receive Status Queue Almost Full */
+
+#define ns_stat_sfbqc_get(stat) (((stat) & NS_STAT_SFBQC_MASK) >> 23)
+#define ns_stat_lfbqc_get(stat) (((stat) & NS_STAT_LFBQC_MASK) >> 15)
+
+/* #defines which depend on other #defines */
+
+#define NS_TST0 NS_TST_FRSCD
+#define NS_TST1 (NS_TST_FRSCD + NS_TST_NUM_ENTRIES + 1)
+
+#define NS_FRSCD (NS_TST1 + NS_TST_NUM_ENTRIES + 1)
+#define NS_FRSCD_SIZE 12	/* 12 dwords */
+#define NS_FRSCD_NUM ((NS_TST_FRSCD_END + 1 - NS_FRSCD) / NS_FRSCD_SIZE)
+
+#if (NS_SMBUFSIZE == 48)
+#define NS_CFG_SMBUFSIZE NS_CFG_SMBUFSIZE_48
+#elif (NS_SMBUFSIZE == 96)
+#define NS_CFG_SMBUFSIZE NS_CFG_SMBUFSIZE_96
+#elif (NS_SMBUFSIZE == 240)
+#define NS_CFG_SMBUFSIZE NS_CFG_SMBUFSIZE_240
+#elif (NS_SMBUFSIZE == 2048)
+#define NS_CFG_SMBUFSIZE NS_CFG_SMBUFSIZE_2048
+#else
+#error NS_SMBUFSIZE is incorrect in nicstar.h
+#endif /* NS_SMBUFSIZE */
+
+#if (NS_LGBUFSIZE == 2048)
+#define NS_CFG_LGBUFSIZE NS_CFG_LGBUFSIZE_2048
+#elif (NS_LGBUFSIZE == 4096)
+#define NS_CFG_LGBUFSIZE NS_CFG_LGBUFSIZE_4096
+#elif (NS_LGBUFSIZE == 8192)
+#define NS_CFG_LGBUFSIZE NS_CFG_LGBUFSIZE_8192
+#elif (NS_LGBUFSIZE == 16384)
+#define NS_CFG_LGBUFSIZE NS_CFG_LGBUFSIZE_16384
+#else
+#error NS_LGBUFSIZE is incorrect in nicstar.h
+#endif /* NS_LGBUFSIZE */
+
+#if (NS_RSQSIZE == 2048)
+#define NS_CFG_RSQSIZE NS_CFG_RSQSIZE_2048
+#elif (NS_RSQSIZE == 4096)
+#define NS_CFG_RSQSIZE NS_CFG_RSQSIZE_4096
+#elif (NS_RSQSIZE == 8192)
+#define NS_CFG_RSQSIZE NS_CFG_RSQSIZE_8192
+#else
+#error NS_RSQSIZE is incorrect in nicstar.h
+#endif /* NS_RSQSIZE */
+
+#if (NS_VPIBITS == 0)
+#define NS_CFG_VPIBITS NS_CFG_VPIBITS_0
+#elif (NS_VPIBITS == 1)
+#define NS_CFG_VPIBITS NS_CFG_VPIBITS_1
+#elif (NS_VPIBITS == 2)
+#define NS_CFG_VPIBITS NS_CFG_VPIBITS_2
+#elif (NS_VPIBITS == 8)
+#define NS_CFG_VPIBITS NS_CFG_VPIBITS_8
+#else
+#error NS_VPIBITS is incorrect in nicstar.h
+#endif /* NS_VPIBITS */
+
+#ifdef RCQ_SUPPORT
+#define NS_CFG_RAWIE_OPT NS_CFG_RAWIE
+#else
+#define NS_CFG_RAWIE_OPT 0x00000000
+#endif /* RCQ_SUPPORT */
+
+#ifdef ENABLE_TSQFIE
+#define NS_CFG_TSQFIE_OPT NS_CFG_TSQFIE
+#else
+#define NS_CFG_TSQFIE_OPT 0x00000000
+#endif /* ENABLE_TSQFIE */
+
+/* PCI stuff */
+
+#ifndef PCI_VENDOR_ID_IDT
+#define PCI_VENDOR_ID_IDT 0x111D
+#endif /* PCI_VENDOR_ID_IDT */
+
+#ifndef PCI_DEVICE_ID_IDT_IDT77201
+#define PCI_DEVICE_ID_IDT_IDT77201 0x0001
+#endif /* PCI_DEVICE_ID_IDT_IDT77201 */
+
+/* Device driver structures */
+
+struct ns_skb_prv {
+	u32 buf_type;		/* BUF_SM/BUF_LG/BUF_NONE */
+	u32 dma;
+	int iovcnt;
+};
+
+#define NS_PRV_BUFTYPE(skb)   \
+        (((struct ns_skb_prv *)(ATM_SKB(skb)+1))->buf_type)
+#define NS_PRV_DMA(skb) \
+        (((struct ns_skb_prv *)(ATM_SKB(skb)+1))->dma)
+#define NS_PRV_IOVCNT(skb) \
+        (((struct ns_skb_prv *)(ATM_SKB(skb)+1))->iovcnt)
+
+typedef struct tsq_info {
+	void *org;
+        dma_addr_t dma;
+	ns_tsi *base;
+	ns_tsi *next;
+	ns_tsi *last;
+} tsq_info;
+
+typedef struct scq_info {
+	void *org;
+	dma_addr_t dma;
+	ns_scqe *base;
+	ns_scqe *last;
+	ns_scqe *next;
+	volatile ns_scqe *tail;	/* Not related to the nicstar register */
+	unsigned num_entries;
+	struct sk_buff **skb;	/* Pointer to an array of pointers
+				   to the sk_buffs used for tx */
+	u32 scd;		/* SRAM address of the corresponding
+				   SCD */
+	int tbd_count;		/* Only meaningful on variable rate */
+	wait_queue_head_t scqfull_waitq;
+	volatile char full;	/* SCQ full indicator */
+	spinlock_t lock;	/* SCQ spinlock */
+} scq_info;
+
+typedef struct rsq_info {
+	void *org;
+        dma_addr_t dma;
+	ns_rsqe *base;
+	ns_rsqe *next;
+	ns_rsqe *last;
+} rsq_info;
+
+typedef struct skb_pool {
+	volatile int count;	/* number of buffers in the queue */
+	struct sk_buff_head queue;
+} skb_pool;
+
+/* NOTE: for small and large buffer pools, the count is not used, as the
+         actual value used for buffer management is the one read from the
+	 card. */
+
+typedef struct vc_map {
+	volatile unsigned int tx:1;	/* TX vc? */
+	volatile unsigned int rx:1;	/* RX vc? */
+	struct atm_vcc *tx_vcc, *rx_vcc;
+	struct sk_buff *rx_iov;	/* RX iovector skb */
+	scq_info *scq;		/* To keep track of the SCQ */
+	u32 cbr_scd;		/* SRAM address of the corresponding
+				   SCD. 0x00000000 for UBR/VBR/ABR */
+	int tbd_count;
+} vc_map;
+
+typedef struct ns_dev {
+	int index;		/* Card ID to the device driver */
+	int sram_size;		/* In k x 32bit words. 32 or 128 */
+	void __iomem *membase;	/* Card's memory base address */
+	unsigned long max_pcr;
+	int rct_size;		/* Number of entries */
+	int vpibits;
+	int vcibits;
+	struct pci_dev *pcidev;
+	struct idr idr;
+	struct atm_dev *atmdev;
+	tsq_info tsq;
+	rsq_info rsq;
+	scq_info *scq0, *scq1, *scq2;	/* VBR SCQs */
+	skb_pool sbpool;	/* Small buffers */
+	skb_pool lbpool;	/* Large buffers */
+	skb_pool hbpool;	/* Pre-allocated huge buffers */
+	skb_pool iovpool;	/* iovector buffers */
+	volatile int efbie;	/* Empty free buf. queue int. enabled */
+	volatile u32 tst_addr;	/* SRAM address of the TST in use */
+	volatile int tst_free_entries;
+	vc_map vcmap[NS_MAX_RCTSIZE];
+	vc_map *tste2vc[NS_TST_NUM_ENTRIES];
+	vc_map *scd2vc[NS_FRSCD_NUM];
+	buf_nr sbnr;
+	buf_nr lbnr;
+	buf_nr hbnr;
+	buf_nr iovnr;
+	int sbfqc;
+	int lbfqc;
+	struct sk_buff *sm_handle;
+	u32 sm_addr;
+	struct sk_buff *lg_handle;
+	u32 lg_addr;
+	struct sk_buff *rcbuf;	/* Current raw cell buffer */
+        struct ns_rcqe *rawcell;
+	u32 rawch;		/* Raw cell queue head */
+	unsigned intcnt;	/* Interrupt counter */
+	spinlock_t int_lock;	/* Interrupt lock */
+	spinlock_t res_lock;	/* Card resource lock */
+} ns_dev;
+
+   /* NOTE: Each tste2vc entry relates a given TST entry to the corresponding
+      CBR vc. If the entry is not allocated, it must be NULL.
+
+      There are two TSTs so the driver can modify them on the fly
+      without stopping the transmission.
+
+      scd2vc allows us to find out unused fixed rate SCDs, because
+      they must have a NULL pointer here. */
+
+#endif /* _LINUX_NICSTAR_H_ */